Efficient automatic dry coal preparation equipment for coal mines

Abstract

The invention discloses efficient and automatic dry method coal preparation equipment for coal mines. The equipment comprises a preparation box, a screening box is fixedly arranged on the right end face of the preparation box, a screening cavity is formed in the screening box, a screening machine is arranged in the screening cavity, a sliding box penetrating downwards is fixedly arranged on the right end face of the preparation box and located on the upper side of the screening box, an absorption machine is arranged in the sliding box, a conveying cavity is formed in the preparation box, a crushing cavity is formed in the front side of the conveying cavity, the conveying cavity is communicated with the crushing cavity through a connecting cavity, a conveyor is arranged in the conveying cavity, and a crusher is arranged in the crushing cavity.Dust absorption is carried out through air pressure difference between the screening box and the sliding box, and the bending of an elastic sheet is controlled by wind force, so that the start and shutdown of drying work can be controlled; through the track of a sliding groove, a screening plate slides left and right when vibrating up and down, a gear plate can be inserted into the sliding groove, the left-right moving distance can be changed, and coal mines with different particle sizes can be screened.

Description

technical field [0001] The invention relates to the technical field of coal mine screening, in particular to a high-efficiency automatic dry coal preparation equipment for coal mines. Background technique [0002] Coal mine screening is a processing operation that uses screening equipment to divide the mined raw coal into different sizes, and removes visible gangue and sundries in the specified particle size. It is divided into wet or dry sorting. [0003] In the dry screening of coal mines, because the air passage of the gas distribution plate, the core component of the dry coal preparation device, is frequently blocked by coal slime and other debris, it cannot work normally. Due to the large number of air passages, it cannot be cleaned by mechanical or manual methods. At the same time, vibrating screening is likely to cause dust to scatter around and cannot be effectively absorbed. When performing vibrating jet screening, the gas distribution plate can only screen coal min...

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Problems solved by technology

[0003] In the dry screening of coal mines, because the air passage of the gas distribution plate, the core component of the dry coal preparation device, is frequently blocked by coal slime and other debris, it cannot work normally. Due to the large number of air passages, it cannot be cleaned by mechanical or manual methods. At the same time, vibrating screening is likely to cause dust to scatter around and cannot be effectively absorbed. When performing vibrating jet screening, the gas distribution plate can only screen coal mines with a certain particle size range, and cannot be changed according to the screening interval required by the user. Replacing the gas distribution plate is troublesome

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